Humphrey needs to mail a package. He weighs it at home as 20.2 ounces. When he gets to the post office, the clerk weighs it at 1
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Answer:
0.314 = 31.4% probability that a randomly selected person in this city will have a commute time between 0.4 and 1 hours
Step-by-step explanation:
Exponential distribution:
The exponential probability distribution, with mean m, is described by the following equation:
In which is the decay parameter.
The probability that x is lower or equal to a is given by:
Which has the following solution:
The probability of finding a value higher than x is:
In this question:
What is the probability that a randomly selected person in this city will have a commute time between 0.4 and 1 hours?
In which
So
0.314 = 31.4% probability that a randomly selected person in this city will have a commute time between 0.4 and 1 hours